Dimensions of Low-Voltage Switchgear in Iraq

Low-voltage switchgear in Iraq typically features sheet steel cabinets of at least 2 mm thickness, designed for 100–400 kVA transformers, with modular dimensions adaptable to site requirements.

Cabinet and Panel Construction

LV switchgear cabinets in Iraq are generally constructed from sheet steel with a minimum thickness of 2 mm for durability and safety, suitable for both indoor and outdoor installations . Panels are designed with hinged doors, bolted covers for cable connections, and mounting brackets for secure installation. The busbar supports are insulated using polyester or acrylic sheets, and cabinets often include extendable features on both sides to accommodate future cable terminations .

Typical Ratings and Dimensions

• Transformer Ratings: 100 kVA, 250 kVA, 400 kVA .
• Circuit Breaker Ratings: 200 A, 250 A, 400 A, with thermal and magnetic protection .
• Busbar Cross-Section: Sized according to rated current and ambient temperature (up to 55°C), .
• Panel Width and Height: Modular, often designed to minimize space requirements while allowing integration with neighboring units . Exact dimensions vary by manufacturer and project specifications, but standard indoor panels typically range from 600–1200 mm width, 2000 mm height, and 600–800 mm depth. Outdoor pole-mounted switchgear may have slightly larger enclosures to accommodate environmental protection and cable terminations .

Standards and Compliance

LV switchgear in Iraq is designed to comply with IEC 60439, IEC 60947, and relevant Iraqi standards, ensuring safe operation under continuous load, voltage variations, and short-circuit conditions . Equipment is tested for ambient temperatures from -10°C to 55°C, with ventilation openings protected by wire mesh to prevent vermin ingress .

Customization and Integration

Manufacturers in Iraq, such as Sempra Electric and IPDCO, offer customizable LV panels to meet industrial, utility, and commercial requirements. Panels can be configured for future expansion, with extendable busbars and modular compartments for incoming and outgoing feeders .

In summary, LV switchgear in Iraq is robust, modular, and designed for both indoor and outdoor applications, with cabinet thickness of at least 2 mm, adaptable dimensions, and compliance with IEC and local standards, supporting transformer ratings from 100 to 400 kVA and circuit breaker ratings up to 400 A .